Home / 268,819.08-403,288.80-81,845.16

Finding the Fourth Proportional to 268,819.08, 403,288.80 and 81,845.16

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Solution

The fourth proportional to 268,819.08, 403,288.80 and 81,845.16 is: 122,786.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,819.08 : 403,288.80 = 81,845.16 : x
  2. Step 2: Convert to fraction form
    268,819.08/403,288.80 = 81,845.16/x
  3. Step 3: Cross multiply
    268,819.08x = 403,288.80 × 81,845.16
  4. Step 4: Simplify right side
    268,819.08x = 33,007,236,362.21
  5. Step 5: Solve for x
    x = 33,007,236,362.21/268,819.08
  6. Step 6: Final answer
    x = 122,786.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.